Annotations: 6PCE

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	COX6B	e6pceA1	A: few secondary structure elements	X: Cytochrome c oxidase subunit h (From Topology)	H: Cytochrome c oxidase subunit h (From Topology)	T: Cytochrome c oxidase subunit h	F: COX6B	ECOD (1.6)
B	COX6B	e6pceB1	A: few secondary structure elements	X: Cytochrome c oxidase subunit h (From Topology)	H: Cytochrome c oxidase subunit h (From Topology)	T: Cytochrome c oxidase subunit h	F: COX6B	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02297	Cytochrome oxidase c subunit VIb (COX6B)	Cytochrome oxidase c subunit VIb	Cytochrome c oxidase, a 13 sub-unit complex, EC:1.9.3.1 is the terminal oxidase in the mitochondrial electron transport chain. This family is composed of the potentially heme-binding subunit IVb of the oxidase.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Cytochrome c oxidase assembly factor 6 homolog	cation binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding RNA binding nucleic acid binding	respiratory chain complex IV assembly cytochrome complex assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport respiratory chain complex IV assembly cytochrome complex assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy respiratory electron transport chain metabolic process mitochondrial ATP synthesis coupled electron transport mitochondrial cytochrome c oxidase assembly organelle organization mitochondrial respiratory chain complex assembly mitochondrion organization	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen mitochondrial intermembrane space organelle envelope lumen organelle envelope mitochondrial envelope

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036549	Cytochrome c oxidase subunit 6B/Cytochrome c oxidase assembly factor 6-like superfamily	Homologous Superfamily
A, B	IPR048280	Cytochrome oxidase c subunit VIb-like	Family
A, B	IPR042289	Cytochrome c oxidase assembly factor 6 homolog	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q5JTJ3	cardioencephalomyopathy, fatal infantile, due to cytochrome c oxidase deficiency 4 Cardioencephalomyopathy, Fatal Infantile, due to Cytochrome C Oxidase Deficiency breast cancer pancreatic intraductal papillary-mucinous neoplasm breast carcinoma cytochrome-c oxidase deficiency disease non-small cell lung carcinoma invasive ductal breast carcinoma ovarian cancer

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.